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SRADIATE
18.30
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SRADIATE: Specify surface radiation conditions in heat transfer analysis.
This option is used to apply surface radiation boundary conditions between a nonconcave s urface and a
nonreflecting environment in fully coupled thermal-stress analysis. In ABAQUS/Standard it is al so used
for heat transfer and coupled therm al-electrical analyses.
It must be used in conjunction with the
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PHYSICAL CONSTANTS option, which is used to define the
Stefan-Boltzm ann constant.
Products: ABAQUS/Standard ABAQUS/Explicit
Type: History data
Level: Step
Reference:
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“Thermal loads,” Section 27.4.4 of the ABAQUS Analysis User’s Manual
Optional parameters:
AMPLITUDE
Set this parameter equal to the nam e of the
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AMPLITUDE option that gives the variation of the
ambient temperature with time.
If this parameter is omitted in an ABAQUS/Standard analysis, the reference magnitude is
applied immediately at t he beginning of the step or linearly over the step, depen ding on the value
assigned to the AMPLITUDE parameter on the
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STEP opt ion (see “Proced ures: overview,”
Section 6.1.1 of the ABAQUS Analysis User’s Manual). If this parameter is omitted in an
ABAQUS/Explicit analysis, the reference magnitude is applied immediate ly at the beginning of
the step.
OP
Set OP=MOD (default) for existing
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SRADIATE definitions to remain, with this option modifying
existing radiation conditions or defi ning additional radiation conditions.
Set OP=NEW if all existing
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SRADIATE definitions applied to the model should be remove d.
Data lines to define surface radiation conditions:
First line:
1. Surface name.
2. Radiation type label R.
3. Reference ambient temperature value,
.(Unitsof .)
18.30–1
ABAQUS Version 6.1 Module:
ID:
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